Very interesting all that ! I'm learning !!
So here is the figure : my DC-DC converter is said to be "low-noise". It shows a 50mV p-p ripple at a switching frequency around 200kHz (min is 100kHz and max is 300kHz).
At 200kHz, the INA217 (which I use for my pre-amp) shows a power-supply rejection of -70dB.
Does that mean that the 50mV p-p ripple will appear in my audio signal as a 16uV p-p "noise" ?
If so, and considering that my ADC is setup for 1 Vrms (2.83 Vp-p), I should not worry, right ?
Thanks !!